Bionic tower of wind turbine and wind turbine

Abstract

This invention belongs to the field of wind power generation technology and discloses a biomimetic tower for a wind turbine and a wind turbine generator. The biomimetic tower for the wind turbine generator includes a tower body and a biomimetic inner rib structure. The diameter of the tower body gradually decreases from bottom to top. The biomimetic inner rib structure is connected to the inner wall of the tower body. The biomimetic inner rib structure includes multiple circumferential inner ribs, multiple axial inner ribs, and double diagonal stiffening ribs. The multiple circumferential inner ribs and multiple axial inner ribs enclose multiple lattice units. The double diagonal stiffening ribs include multiple first stiffening ribs and multiple second stiffening ribs. The multiple first stiffening ribs and multiple second stiffening ribs are arranged at an angle within the lattice units and are connected to the sides of the lattice units. This biomimetic tower for the wind turbine generator has better overall stability, can control the vibration amplitude at the top of the tower, and can improve buckling resistance, fatigue resistance, and vibration reduction performance without changing the outer surface shape and near-field flow boundary, while avoiding adverse effects on tower shadow effect and wake characteristics.

Description

Technical Field

[0001] This invention relates to the field of wind power generation, and more particularly to a biomimetic tower for a wind turbine and a wind turbine generator. Background Technology

[0002] Offshore wind energy, with its stable wind speed, high energy density, low wind shear, and low turbulence, has become a key area for the future development of the wind power industry. Fixed offshore wind turbines operate in a wind-wave-current coupled environment for extended periods. The dynamic characteristics and stability of their supporting structures directly determine the turbine's lifespan and power generation efficiency. Tides, ocean currents, and wave spectra change over time and can easily encounter the natural frequencies of the tower / support structure in certain frequency bands, triggering vortex-induced vibrations and resonance amplification. This subjectes the top nacelle-rotor system to periodic excitation, increasing the risk of fatigue damage and extreme response. Under extreme conditions such as typhoons or earthquakes, the response will be further amplified. Current technologies involve adding various mechanical components to the outer surface of the tower to enhance stability or redistribute fatigue loads. However, such significant external modifications alter near-field and wake characteristics, causing changes in the tower shadow effect and reducing power generation efficiency. Furthermore, the added moving parts themselves pose potential failure and safety hazards.

[0003] Therefore, there is an urgent need to propose a tower with better overall stability, controllable tower top vibration amplitude, and without changing the outer surface shape of the tower and the near-field flow boundary, so as to improve buckling resistance, fatigue resistance and vibration reduction performance while avoiding adverse effects on tower shadow effect and wake characteristics. Summary of the Invention

[0004] The first objective of this invention is to provide a biomimetic tower for a wind turbine, which has better overall stability, can control the vibration amplitude at the top of the tower, and can improve buckling resistance, fatigue resistance and vibration reduction performance without changing the outer surface shape and near-field flow boundary, while avoiding adverse effects on the tower shadow effect and wake characteristics.

[0005] The second objective of this invention is to provide a wind turbine generator with good structural strength, which can better withstand ordinary loads such as turbulent winds, waves and currents, or extreme loads such as typhoons, earthquakes or impacts, thus extending its service life.

[0006] To achieve this objective, the present invention adopts the following technical solution: This invention discloses a biomimetic tower for a wind turbine, comprising: a tower body, the diameter of which gradually decreases from bottom to top; a biomimetic inner rib structure connected to the inner wall of the tower body, the biomimetic inner rib structure including multiple circumferential inner ribs, multiple axial inner ribs, and double diagonal stiffening ribs, wherein each of the circumferential inner ribs extends circumferentially along the tower body, and the multiple circumferential inner ribs are spaced apart axially along the tower body; each of the axial inner ribs extends axially along the tower body, and the multiple axial inner ribs are spaced apart circumferentially along the tower body; the multiple circumferential inner ribs and the multiple axial inner ribs enclose multiple lattice units, and the double diagonal stiffening ribs include multiple first stiffening ribs and multiple second stiffening ribs, the multiple first stiffening ribs and the multiple second stiffening ribs being arranged at an angle within the lattice unit and connected to the side of the lattice unit.

[0007] In some embodiments, there are two axial inner ribs, and two lattice units are arranged along the circumferential direction of the tower body, namely a first lattice unit and a second lattice unit. Along the axial direction of the tower body, in two adjacent lattice units, one is the first lattice unit and the other is the second lattice unit. The area ratio of the double diagonal stiffening ribs in the first lattice unit relative to the first lattice unit is smaller than the area ratio of the double diagonal stiffening ribs in the second lattice unit relative to the second lattice unit.

[0008] In some specific embodiments, the first lattice unit is provided with two first stiffening ribs and two second stiffening ribs. The two first stiffening ribs are provided at two opposite corners of the first lattice unit, and the two second stiffening ribs are provided at the other two opposite corners of the first lattice unit. The first stiffening ribs and the second stiffening ribs are spaced apart.

[0009] In some specific embodiments, the second lattice unit is provided with two first stiffening ribs and two second stiffening ribs. The two first stiffening ribs are provided at two opposite corners of the second lattice unit, and the two second stiffening ribs are provided at the other two opposite corners of the second lattice unit. The first stiffening ribs and second stiffening ribs at adjacent two opposite corners are arranged intersectingly.

[0010] In some specific embodiments, the double diagonal stiffeners include two arc-shaped stiffeners, each of which is connected at both ends to an inward circumferential rib. The arc length of the arc-shaped stiffener in the first lattice unit is less than the arc length of the arc-shaped stiffener in the second lattice unit.

[0011] In some more specific embodiments, within the first lattice unit, the two ends of the arc-shaped stiffening rib are spaced apart from the first stiffening rib and the second stiffening rib; within the second lattice unit, the two ends of the arc-shaped stiffening rib are intersected with the first stiffening rib and the second stiffening rib, and the apex positions of the two arc-shaped stiffening ribs are connected.

[0012] In some more specific embodiments, in one of the first lattice unit and the second lattice unit, the connection position between the arc-shaped stiffening rib and the circumferential inner rib is a first connection position, and in the other of the first lattice unit and the second lattice unit, the connection position between the first stiffening rib and the circumferential inner rib is a second connection position; the first connection position and the second connection position are arranged opposite to each other along the circumferential direction of the tower body.

[0013] In some embodiments, the biomimetic inner rib structure is welded to the inner wall of the tower body via a connecting pad; or, the biomimetic inner rib structure is fixed to the tower body via bolts.

[0014] In some embodiments, the tower body includes multiple prefabricated sections, which are fixed sequentially along the height direction of the tower body. The biomimetic inner rib structure includes prefabricated structures, which are fixed one by one within the multiple prefabricated sections. The axial inner ribs on two adjacent prefabricated structures are fixed by welding or bolt connection.

[0015] The present invention provides a wind turbine generator, comprising the aforementioned biomimetic tower of the wind turbine generator and a generator mounted on the top of the biomimetic tower of the wind turbine generator.

[0016] The beneficial effects of the biomimetic tower for wind turbines of the present invention are as follows: The biomimetic tower for wind turbines features a biomimetic internal rib structure inside the tower cylinder, ensuring that the outer surface shape of the tower cylinder and the near-field flow boundary remain unchanged. The biomimetic internal rib structure, composed of multiple circumferential internal ribs, multiple axial internal ribs, and double diagonal stiffening ribs, reconstructs the natural frequency, modal participation coefficient, and local stiffness distribution of the biomimetic tower for wind turbines, achieving a synergistic improvement in buckling resistance, fatigue resistance, and vibration reduction. This results in good stability of the biomimetic tower for wind turbines under multi-load impacts, effectively alleviating structural problems in high-risk damage areas of the biomimetic tower for wind turbines, and achieving control over the vibration amplitude at the tower top. Therefore, the biomimetic tower for wind turbines provided by the present invention improves buckling resistance, fatigue resistance, and vibration reduction performance while avoiding adverse effects on the tower shadow effect and wake characteristics.

[0017] The beneficial effects of the wind turbine of the present invention are as follows: due to the biomimetic tower of the wind turbine described above, the wind turbine has good structural strength and can better withstand ordinary loads such as turbulent wind, waves and currents, or extreme loads such as typhoons, earthquakes or impacts, thus extending its service life.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the biomimetic tower of the wind turbine according to an embodiment of the present invention; Figure 2 This is a partial structural schematic diagram of the biomimetic tower of the wind turbine according to an embodiment of the present invention; Figure 3 This is another partial structural schematic diagram of the biomimetic tower of the wind turbine according to an embodiment of the present invention; Figure 4 This is a stress cloud diagram of a conventional tower structure; Figure 5 This is a stress cloud diagram of the biomimetic tower of the wind turbine according to an embodiment of the present invention; Figure 6 This is the strain energy response diagram of a conventional tower structure; Figure 7 This is a strain energy response diagram of the biomimetic tower of the wind turbine according to an embodiment of the present invention.

[0020] Figure label: 100. Tower body; 200. Bionic internal rib structure; 210. Circumferential internal rib band; 220. Axial internal rib band; 230. Double diagonal stiffening rib; 231. First stiffening rib; 232. Second stiffening rib; 233. Arc-shaped stiffening rib; 300. First lattice unit; 400. Second lattice unit. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0022] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] In the description of this embodiment, the terms "upper," "lower," "left," "right," "front," and "rear," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0024] This invention discloses a biomimetic tower for a wind turbine, with reference to... Figure 1As shown, the biomimetic tower of the wind turbine includes a tower cylinder 100 and a biomimetic inner rib structure 200. The diameter of the tower cylinder 100 gradually decreases from bottom to top. The biomimetic inner rib structure 200 is connected to the inner wall of the tower cylinder 100. The biomimetic inner rib structure 200 includes multiple circumferential inner ribs 210, multiple axial inner ribs 220, and double diagonal stiffening ribs 230. Each circumferential inner rib 210 extends circumferentially along the tower cylinder 100, and the multiple circumferential inner ribs 210 extend circumferentially along the tower cylinder 100. Axially spaced distribution; each axial inner rib 220 extends along the axial direction of the tower body 100, and multiple axial inner ribs 220 are distributed circumferentially along the tower body 100; multiple circumferential inner ribs 210 and multiple axial inner ribs 220 enclose multiple lattice units, and the double diagonal stiffening ribs 230 include multiple first stiffening ribs 231 and multiple second stiffening ribs 232, which are arranged at an angle within the lattice unit and connected to the side of the lattice unit. Understandably, the biomimetic tower of this wind turbine features a biomimetic inner rib structure 200 inside the tower body 100, ensuring that the outer surface shape of the tower body 100 and the near-field flow boundary remain unchanged. The biomimetic inner rib structure 200, composed of multiple circumferential inner ribs 210, multiple axial inner ribs 220, and double diagonal stiffening ribs 230, reconstructs the natural frequency, modal participation coefficient, and local stiffness distribution of the biomimetic tower, achieving a synergistic improvement in buckling resistance, fatigue resistance, and vibration reduction. This results in good stability of the biomimetic tower under multi-load impacts, effectively alleviating structural problems in high-risk areas of the biomimetic tower and controlling the vibration amplitude at the tower top. Therefore, the biomimetic tower of the wind turbine provided by this invention improves buckling resistance, fatigue resistance, and vibration reduction performance while avoiding adverse effects on the tower shadow effect and wake characteristics.

[0025] It should be noted that, in the appendix Figure 1 Part of the tower cylinder 100 was removed, revealing the internal biomimetic inner rib structure 200.

[0026] It should be further explained that the structure of the lattice units and the double diagonal stiffening ribs 230 is modeled after the skeletal structure of Eulectella aspergillum (a type of glass sponge living in the deep sea). Eulectella aspergillum consists of glassy spicules arranged in a regular grid pattern, further reinforced by two sets of diagonal struts, forming a checkerboard pattern of alternating open and closed units, giving the overall structure greater structural robustness. The double diagonal grid framework of Eulectella aspergillum allows the biomimetic grid to achieve a balance between high stiffness, high energy absorption, controllable failure, and lightweight efficiency. Its overall compressive strength, bending strength, and toughness are superior to traditional honeycomb / lattice structures, making it a preferred choice for impact-resistant, protective, and lightweight load-bearing applications.

[0027] refer to Figures 2-3 As shown, there are two axial inner ribs 220. Two lattice units are arranged along the circumferential direction of the tower cylinder 100, namely the first lattice unit 300 and the second lattice unit 400. Along the axial direction of the tower cylinder 100, one of the two adjacent lattice units is the first lattice unit 300 and the other is the second lattice unit 400. The area ratio of the double diagonal stiffening ribs 230 in the first lattice unit 300 relative to the first lattice unit 300 is smaller than the area ratio of the double diagonal stiffening ribs 230 in the second lattice unit 400 relative to the second lattice unit 400. It is understood that in this embodiment, the first lattice unit 300 and the second lattice unit 400 are arranged adjacent to each other along the circumferential and axial directions of the tower cylinder 100. This structural form can reconstruct the force path, so that the high stress zone changes from continuous to discrete and dispersed, reducing the phenomenon of stress concentration, thereby further improving the ability of the bionic tower of the wind turbine to resist multiple load impacts. This enables the wind turbine to better withstand ordinary loads such as turbulent wind, waves and currents, or extreme loads such as typhoons, earthquakes or impacts, and extend its service life.

[0028] It should be further noted that, in this embodiment, the area ratio refers to the ratio of the projected area of ​​the double diagonal stiffeners 230 on the vertical plane to the projected area of ​​the lattice unit. A larger area ratio indicates that the width and / or length of the first stiffener 231 and the second stiffener 232 contained within the double diagonal stiffeners 230 are larger. That is, in this embodiment, the size of the double diagonal stiffeners 230 in the first lattice unit 300 is smaller than the size of the double diagonal stiffeners 230 in the second lattice unit 400.

[0029] Optionally, the first lattice unit 300 is provided with two first stiffening ribs 231 and two second stiffening ribs 232. The two first stiffening ribs 231 are located at two opposite corners of the first lattice unit 300, and the two second stiffening ribs 232 are located at the other two opposite corners of the first lattice unit 300. The first stiffening ribs 231 and the second stiffening ribs 232 are spaced apart. That is, in this embodiment, one end of the first stiffening rib 231 is connected to the circumferential inner rib strip 210, and the other end is connected to the axial inner rib strip 220. The connection method can be any one of welding, screw connection, or riveting. One end of the second stiffening rib 232 is connected to the circumferential inner rib strip 210, and the other end is connected to the axial inner rib strip 220. The connection method can be any one of welding, screw connection, or riveting.

[0030] Optionally, the second lattice unit 400 is provided with two first stiffening ribs 231 and two second stiffening ribs 232. The two first stiffening ribs 231 are located at two opposite corners of the second lattice unit 400, and the two second stiffening ribs 232 are located at the other two opposite corners of the first lattice unit 400, with the first stiffening ribs 231 and second stiffening ribs 232 at adjacent corners intersecting. That is, in this embodiment, one end of the first stiffening rib 231 is connected to the circumferential inner rib strip 210, and the other end is connected to the axial inner rib strip 220. The connection method can be any one of welding, screw connection, or riveting. One end of the second stiffening rib 232 is connected to the circumferential inner rib strip 210, and the other end is connected to the axial inner rib strip 220. The connection method can be any one of welding, screw connection, or riveting. The first stiffening rib 231 and the second stiffening rib 232 are arranged in an intersecting manner. The first stiffening rib 231 and the second stiffening rib 232 can be connected by any method such as welding, screw connection or riveting. Alternatively, the first stiffening rib 231 and the second stiffening rib 232 can be directly integrally formed during the production process.

[0031] Optionally, the double diagonal stiffeners 230 include two arc-shaped stiffeners 233, each arc-shaped stiffener 233 having its two ends connected to an inwardly circumferential rib band 210. The arc length of the arc-shaped stiffener 233 within the first lattice unit 300 is less than the arc length of the arc-shaped stiffener 233 within the second lattice unit 400. It is understood that adding double diagonal stiffeners 230 outside the first stiffener 231 and the second stiffener 232 can further transform the high-stress band from continuous to discrete, reducing stress concentration and thus further enhancing the ability of the biomimetic tower of the wind turbine to resist multi-load impacts.

[0032] Optionally, within the first lattice unit 300, the two ends of the arc-shaped stiffening rib 233 are spaced apart from the first stiffening rib 231 and the second stiffening rib 232; within the second lattice unit 400, the two ends of the arc-shaped stiffening rib 233 are intersected with the first stiffening rib 231 and the second stiffening rib 232, with the apexes of the two arc-shaped stiffening ribs 233 connected. The intersecting arrangement of the two ends of the arc-shaped stiffening rib 233 with the first stiffening rib 231 and the second stiffening rib 232 can be achieved through any method such as welding, screw connection, or riveting, or the arc-shaped stiffening rib 233, the first stiffening rib 231, and the second stiffening rib 232 can be directly integrally formed during the production process. The connection of the apexes of the two arc-shaped stiffening ribs 233 can be achieved through welding or by directly integrally forming the two arc-shaped stiffening ribs 233.

[0033] In some more specific embodiments, in one of the first lattice unit 300 and the second lattice unit 400, the connection position between the arc-shaped stiffening rib 233 and the circumferential inner rib 210 is the first connection position, and in the other of the first lattice unit 300 and the second lattice unit 400, the connection position between the first stiffening rib 231 and the circumferential inner rib 210 is the second connection position; the first connection position and the second connection position are arranged opposite to each other along the circumferential direction of the tower body 100. It is understandable that the corresponding arrangement of the first and second connection positions allows the ends of the arc-shaped stiffening ribs 233 in the first lattice to correspond with the ends of the first stiffening ribs 231 and 232 in the second lattice unit 400, and the ends of the arc-shaped stiffening ribs 233 in the second lattice to correspond with the ends of the first stiffening ribs 231 and 232 in the first lattice unit 300. This corresponding arrangement can further transform the high-stress band from continuous to discrete and dispersed, reducing stress concentration and thus further improving the ability of the bionic tower of the wind turbine to resist multi-load impacts.

[0034] Optionally, the biomimetic inner rib structure 200 is welded to the inner wall of the tower cylinder 100 via a connecting pad; this ensures the connection stability between the biomimetic inner rib structure 200 and the tower cylinder 100. Of course, in an alternative embodiment of the invention, the biomimetic inner rib structure 200 is fixed to the tower cylinder 100 by bolts. Specifically, the tower cylinder 100 has threaded holes inside, and bolts are threaded through the biomimetic inner rib structure 200 for fixing. To ensure connection stability, the bolts need to be fitted with expansion sleeves, or expansion bolts can be used directly for fixing.

[0035] Optionally, the tower body 100 includes multiple prefabricated sections, which are sequentially fixed along the height of the tower body 100. The biomimetic inner rib structure 200 includes prefabricated structures, which are fixed one by one within the multiple prefabricated sections. The axial inner ribs 220 on adjacent prefabricated structures are fixed by welding or bolt connection. Understandably, in actual operation, the factory cuts / cold-bends the circumferential inner ribs 210, axial inner ribs 220, and double diagonal stiffening ribs 230 according to the tower section dimensions, assembles them into prefabricated structures on a platform, then completes the layout and positioning and pre-installation of connecting pads on the inner wall of the prefabricated sections, then hoists the prefabricated sections sequentially and completes the positioning and insertion, and finally uses circumferential welding or high-strength bolts for secure fastening to achieve reliable connection, and inspects and repairs the welds / bolts for corrosion protection.

[0036] refer to Figures 4-5As shown, the extreme stress of the bionic tower of the wind turbine in this embodiment of the invention is reduced from 188.32 MPa in the prior art to 174.85 MPa (a reduction of approximately 7%). Regarding stress distribution, conventional towers exhibit a continuous high-stress zone at the 90° section, while the 0° / 180° / 270° sections are dominated by moderate stress, indicating a clear separation between the bending tension side and the compression side in the direction of the dominant wind-wave coupling thrust. The bionic tower of the wind turbine of this invention still forms a main high-stress zone at 90° under the same load, but the high-stress zone is narrower, its continuity along the height is interrupted, and a more balanced stress diffusion occurs at the 0° / 180° / 270° sections, demonstrating the diversion and passivation effect of the inner ribs on the bending internal force path, weakening the stress concentration and local buckling triggering conditions on a single generatrix. From the stress time history, the maximum stress curves of both types of towers show several pulsating peaks in the early stage, with a significant peak cluster appearing approximately every 100 seconds, due to the increased intensity of the earthquake. Compared to conventional structures, the peak values ​​of the biomimetic tower of the wind turbine are generally lower, indicating increased local structural stiffness, weakened modal coupling, and suppressed transient amplification factor. Regarding the mean stress curve, the biomimetic tower of the wind turbine of this invention is generally lower than that of conventional towers, and the amplitude of periodic fluctuations is smaller, reflecting a decrease in both stress level and stress gradient. This is beneficial for fatigue life: under the same SN curve and load spectrum, a simultaneous decrease in Δσ and mean stress typically reduces the damage accumulation rate.

[0037] refer to Figures 6-7 As shown in the strain energy response diagram, a continuous high-energy band appears at the 90° section of the conventional tower, with a maximum strain energy of approximately 1789 J. This indicates a high concentration of bending internal forces, making local buckling and fatigue damage prone to develop along this generatrix. The biomimetic tower of the wind turbine of this invention reduces the maximum strain energy to approximately 214 J, a peak reduction of approximately 88%. The high-energy region changes from a continuous stripe to discrete spots, with energy dispersed and dissipated through multiple paths in both the circumferential and vertical directions. These results demonstrate that the biomimetic tower of the wind turbine of this invention weakens the amplification effect caused by modal coupling, reduces the energy density at critical sections, positively improves both ultimate load-bearing capacity and fatigue life, and makes the overall stress distribution more uniform and the response more controllable.

[0038] The present invention also discloses a wind turbine, comprising the aforementioned biomimetic tower of the wind turbine and a generator mounted on top of the biomimetic tower. Due to the aforementioned biomimetic tower, the wind turbine has good structural strength and can better withstand ordinary loads such as turbulent winds, waves, and currents, or extreme loads such as typhoons, earthquakes, or impacts, thus extending its service life.

[0039] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0040] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A bionic tower of a wind power generator, characterized in that, include: The tower body (100) has a diameter that gradually decreases from bottom to top; A biomimetic internal rib structure (200) is connected to the inner wall of the tower body (100). The biomimetic internal rib structure (200) includes multiple circumferential internal ribs (210), multiple axial internal ribs (220), and double diagonal stiffening ribs (230). Each of the circumferential inner ribs (210) extends circumferentially along the tower body (100), and the plurality of circumferential inner ribs (210) are distributed at intervals along the axial direction of the tower body (100); Each of the axial inner ribs (220) extends along the axial direction of the tower body (100), and the plurality of axial inner ribs (220) are distributed at circumferential intervals along the tower body (100); The multiple circumferential inner ribs (210) and the multiple axial inner ribs (220) enclose a multiple lattice unit. The double diagonal stiffening ribs (230) include a multiple first stiffening ribs (231) and a multiple second stiffening ribs (232). The multiple first stiffening ribs (231) and the multiple second stiffening ribs (232) are arranged at an angle within the lattice unit and are connected to the side of the lattice unit.

2. The biomimetic tower for a wind turbine according to claim 1, characterized in that, There are two axial inner ribs (220). Two lattice units are arranged along the circumferential direction of the tower body (100), namely a first lattice unit (300) and a second lattice unit (400). Along the axial direction of the tower body (100), one of the two adjacent lattice units is the first lattice unit (300) and the other is the second lattice unit (400). The area ratio of the double diagonal stiffening rib (230) in the first lattice unit (300) relative to the first lattice unit (300) is smaller than the area ratio of the double diagonal stiffening rib (230) in the second lattice unit (400) relative to the second lattice unit (400).

3. The biomimetic tower for a wind turbine according to claim 2, characterized in that, The first lattice unit (300) is provided with two first stiffening ribs (231) and two second stiffening ribs (232). The two first stiffening ribs (231) are located at two opposite corners of the first lattice unit (300), and the two second stiffening ribs (232) are located at the other two opposite corners of the first lattice unit (300). The first stiffening ribs (231) and the second stiffening ribs (232) are arranged at intervals.

4. The biomimetic tower of the wind turbine according to claim 2, characterized in that, The second lattice unit (400) is provided with two first stiffening ribs (231) and two second stiffening ribs (232). The two first stiffening ribs (231) are provided at two opposite corners of the second lattice unit (400), and the two second stiffening ribs (232) are provided at the other two opposite corners of the second lattice unit (400). The first stiffening ribs (231) and the second stiffening ribs (232) at adjacent two opposite corners are intersected.

5. The biomimetic tower for a wind turbine according to claim 2, characterized in that, The double diagonal stiffener (230) includes two arc-shaped stiffeners (233), each of which is connected at both ends to an inner circumferential rib (210). The arc length of the arc-shaped stiffener (233) in the first lattice unit (300) is smaller than the arc length of the arc-shaped stiffener (233) in the second lattice unit (400).

6. The biomimetic tower of the wind turbine according to claim 5, characterized in that, Within the first lattice unit (300), the two ends of the arc-shaped stiffening rib (233) are spaced apart from the first stiffening rib (231) and the second stiffening rib (232); Within the second lattice unit (400), the two ends of the arc-shaped stiffening rib (233) are intersected with the first stiffening rib (231) and the second stiffening rib (232), and the apex positions of the two arc-shaped stiffening ribs (233) are connected.

7. The biomimetic tower for a wind turbine according to claim 5, characterized in that, In one of the first lattice unit (300) and the second lattice unit (400), the connection position between the arc-shaped stiffening rib (233) and the circumferential inner rib (210) is the first connection position; in the other of the first lattice unit (300) and the second lattice unit (400), the connection position between the first stiffening rib (231) and the circumferential inner rib (210) is the second connection position; along the circumferential direction of the tower body (100), the first connection position and the second connection position are arranged opposite to each other.

8. The biomimetic tower of the wind turbine according to claim 1, characterized in that, The biomimetic inner rib structure (200) is welded and fixed to the inner wall of the tower cylinder (100) via connecting pads; or, The biomimetic inner rib structure (200) is fixed to the tower body (100) by bolts.

9. The biomimetic tower of the wind turbine according to claim 1, characterized in that, The tower body (100) includes multiple prefabricated sections, which are fixed sequentially along the height direction of the tower body (100). The biomimetic inner rib structure (200) includes prefabricated structures, which are fixed one by one within the multiple prefabricated sections. The axial inner ribs (220) on two adjacent prefabricated structures are fixed by welding or bolt connection.

10. A wind turbine generator, characterized in that, Includes the biomimetic tower of the wind turbine as described in any one of claims 1-9 and the generator mounted on top of the biomimetic tower of the wind turbine.

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